Most people who are camping and visiting this part of the Ozark's are here to enjoy the river, but don't forget to checkout the caves. I spoke to the campground host and his wife and they told me that the Onondaga caves are the third most visited in North America. The staff at the visitors center was also friendly.
The campground was very clean and well maintained. There isn't a lot of tent camping, most people are visiting with RV's and camper trailers. There are a lot of folks with canoes and inner-tubes in the campground.
Checkout my one minute video with Mike, the campground host, talking about Onondaga Cave State Park.